A spokesman for Sibelco, which runs the disused quarry, said:

"Safety is our prime concern and signs are in place to warn against swimming and diving.

"We will work with the police and other investigating authorities to help establish exactly what took place.

"Until that process has run its course, we can only say further that our thoughts go out to all who have been touched by these deaths."

Norfolk Police Assistant Chief Constable Nick Dean said: "The tragic discoveries of the bodies of these two people came after an extensive search of Bawsey Pits by the emergency services and volunteers.

"On behalf of everyone involved, I would like to offer my condolences to the families of the males who have sadly lost their lives."